/usr/lib/ats2-postiats-0.2.6/libats/SATS/refcount.sats is in ats2-lang 0.2.6-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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(* *)
(* Applied Type System *)
(* *)
(***********************************************************************)
(*
** ATS/Postiats - Unleashing the Potential of Types!
** Copyright (C) 2011-2013 Hongwei Xi, ATS Trustful Software, Inc.
** All rights reserved
**
** ATS is free software; you can redistribute it and/or modify it under
** the terms of the GNU GENERAL PUBLIC LICENSE (GPL) as published by the
** Free Software Foundation; either version 3, or (at your option) any
** later version.
**
** ATS is distributed in the hope that it will be useful, but WITHOUT ANY
** WARRANTY; without even the implied warranty of MERCHANTABILITY or
** FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
** for more details.
**
** You should have received a copy of the GNU General Public License
** along with ATS; see the file COPYING. If not, please write to the
** Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
** 02110-1301, USA.
*)
(* ****** ****** *)
(* Author: Hongwei Xi *)
(* Authoremail: hwxi AT cs DOT bu DOT edu *)
(* Start time: July, 2013 *)
(* ****** ****** *)
#define ATS_PACKNAME "ATSLIB.libats.refcount"
(* ****** ****** *)
//
absvtype // invariant
refcnt_vt0ype_vtype(a:vt@ype) = ptr
//
stadef refcnt = refcnt_vt0ype_vtype
//
(* ****** ****** *)
fun
{a:vt0p}
refcnt(x0: a): refcnt(a)
fun{a:vt0p}
refcnt_make_elt(x0: a): refcnt(a)
(* ****** ****** *)
//
fun{a:vt0p}
refcnt_get_count(!refcnt(a)): intGte(1)
//
(* ****** ****** *)
fun{a:vt0p}
refcnt_incref (!refcnt(a)): refcnt(a)
(* ****** ****** *)
fun{a:vt0p}
refcnt_decref
(
rfc: refcnt(a), x: &a? >> opt(a, b)
) : #[b:bool] bool(b) // end-of-fun
fun{a:vt0p}
refcnt_decref_opt (rfc: refcnt(a)): Option_vt(a)
(* ****** ****** *)
fun{a:vt0p}
refcnt_vtakeout
(rfc: !refcnt(a))
: [l:addr] (a @ l, a @ l -<lin,prf> void | ptr l)
// end of [refcnt_vtakeout]
(* ****** ****** *)
(* end of [refcount.sats] *)
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